(19)

(11)

EP 2 517 342 A2

(12)

(88) Date of publication A3: 08.12.2011 (43) Date of publication: 31.10.2012 Bulletin 2012/44 (21) Application number: 10840094.6 (22) Date of filing: 21.12.2010

(51) International Patent Classification (IPC):  H02M 1/32(2007.01) H02M 3/155(2006.01) H02H 7/12(2006.01) H02H 3/20(2006.01) (86) International application number: PCT/US2010/061665 (87) International publication number: WO 2011/079155 (30.06.2011 Gazette 2011/26)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 23.12.2009 US 646451 (71) Applicant: R2 Semiconductor Inc. Sunnyvale, California 94089-1311 (US)	(72) Inventors: BURNS, Lawrence, M. Los Altos California 94024 (US) FISHER, David Sunnyvale, California 94089 (US) (74) Representative: Beresford, Keith Denis Lewis et al Beresford & Co. 16 High Holborn London WC1V 6BX London WC1V 6BX (GB)